Barrel spring winding device for timepiece, has disks associated to arms so as to grip crown between flanks or faces of disks, when clip is closed, where disks are movable in rotation by rotary driving units

摘要

The device (1) has arms (10, 11) forming a clip (12) with a rotational axis (XX), and two disks (34, 35) movable in rotation by rotary driving units. Each disk has a flank (36) and a face (37) respectively associated to ends of the arms. The disks are associated to the arms so as to grip a crown between the flanks or faces of the disks, when the clip is closed. The driving units have a toothed belt driven by a motor (42) and driving the disks in anti-clockwise rotation. The disks are covered with a layer made of flexible material such as neoprene(RTM: synthetic rubber) or silicone. The motor is a direct-current motor or a step motor supplied with power by a battery (P).